A cool plot might involve a dark force in both universes that is connected. Naruto and Fury discover this link. They gather a group of their allies from both worlds, like Naruto's friends from Konoha and Fury's allies in the Darksiders world. Together, they embark on a journey to find the source of this dark force and stop it. Along the way, there are battles, character development, and cultural exchanges between the two very different universes.
The main villain could be a rogue ninja who has somehow accessed the power of the Darksiders world. He has turned evil and wants to reshape both worlds according to his own twisted vision. He uses his ninja skills combined with the dark powers he has acquired to create an army of minions from both universes. Naruto and Fury must put aside their differences and use their combined skills to take on this powerful and unpredictable foe.
One possible plot could be that Naruto somehow gets transported to the Darksiders universe and is mistaken for Death. He then has to adapt to this new, darker world while also dealing with the enemies and challenges that Death would typically face.
It could be about Naruto's journey as the son of a powerful and angry figure. Maybe he has to deal with the expectations that come with such a heritage while also facing his normal ninja challenges in Konoha.
Maybe Nick Fury is on a mission to recruit unique individuals for a super - secret project. He somehow stumbles upon Hogwarts and finds Harry Potter. Recognizing Harry's leadership skills and his ability to face great danger, Fury wants him to join. Harry, in turn, is intrigued by the idea of a different kind of adventure outside of the wizarding world. They then form a team with some of Harry's wizard friends and some of Fury's agents, and they embark on a quest to stop a powerful, otherworldly entity that is causing chaos in both the Muggle and wizarding realms.
The plot could be about Naruto being transported to the world of How to Train Your Dragon and stumbling upon a Night Fury. Maybe he tries to befriend it using his ninja skills.
In a Naruto and Darksiders crossover fanfiction, there are numerous possibilities. For starters, the art of ninjutsu could be seen as a new form of power in the Darksiders' universe. Naruto's ability to befriend his enemies might also play a role. He could try to reason with some of the more morally ambiguous characters in Darksiders. On the other hand, the Darksiders' characters could introduce Naruto to a whole new level of power and danger. Their weapons and abilities are far different from what he's used to in Konoha. This could lead to Naruto growing in new and unexpected ways, perhaps even unlocking new forms of his own power.
One possible plot could be that Naruto is somehow transported to the X - Men universe. He teams up with Wolverine. Naruto's unique ninja skills, like his shadow clones, could be used in combat against the Brotherhood of Mutants. Wolverine could teach Naruto about the concept of mutants and their struggles, and Naruto could in turn show Wolverine some of his ninja wisdom.
One interesting plot could be that Naruto is somehow transported to the X - Men universe. He teams up with Wolverine. Naruto's ability to create shadow clones could be used in interesting ways during battles, like confusing the enemies. Wolverine could teach Naruto some combat skills from the X - Men's fighting style. They could go on a mission to stop a powerful mutant villain who has plans to take over the world, using Naruto's chakra powers and Wolverine's adamantium claws.
One idea could be a crossover where the characters from Naruto end up in the Darksiders universe and have to fight the demons there using their ninja skills. For example, Naruto could use his shadow clones to confuse the hordes of demons while Sasuke uses his Sharingan to predict their moves.
Perhaps in this fanfiction, the Olympians are concerned about the growing power of the superheroes. Percy is sent as a liaison to Nick Fury. Fury, initially skeptical, soon realizes Percy can be a great asset. Together, they work to maintain peace between the two very different worlds of demigods and superheroes.